3745-34-60
Closure.

(A)
The owner or
operator of a Class I hazardous waste injection well shall prepare, maintain,
and comply with a plan for closure of the well that meets the requirements of
this rule, is in compliance with rule
3745-34-09 of the Administrative
Code and is acceptable to the director. The owner or operator shall implement
the approved closure plan upon termination of a permit or the cessation of
injection activities:

(1)
The owner or
operator of a class I hazardous waste injection well shall submit the plan as a
part of the permit application and, upon approval by the director, such plan
shall be a condition of any permit issued.

(2)
The owner or operator of a class I
hazardous waste injection well shall submit any proposed significant revision
to the method of closure reflected in the closure plan for approval by the
director no later than the date on which notice of closure is required to be
submitted to the director under this rule.

(b)
Has submitted a
plan to the director, for approval, that the owner or operator will follow to
ensure that the well will not endanger USDWS during the period of temporary
disuse. These actions and procedures shall include compliance with the
technical requirements applicable to active injection wells unless waived by
the director.

(6)
The
owner or operator of a class I hazardous waste injection well that has ceased
operations for more than two years shall notify the director thirty days prior
to resuming operation of the well.

(B)
The owner or operator of a class I
hazardous waste injection well shall notify the director at least sixty days
before closure of a well. At the discretion of the director, a shorter notice
period may be allowed.

(C)
Within
sixty days after closure or at the time of the next quarterly report (whichever
is sooner) the owner or operator of a class I hazardous waste injection well
shall submit a closure report to the director. If the quarterly report is due
less than fifteen days after completion of closure, then the report shall be
submitted within sixty days after closure. The report shall be certified as
accurate by the owner or operator and by the person who performed the closure
operation (if other than the owner or operator). Such report shall consist of
either:

(1)
A statement that the well as
closed in accordance with the closure plan previously submitted and approved by
the director; or

(2)
Where actual
closure differed from the plan previously submitted, a written statement
specifying the differences between the previous plan and the actual closure.

(1)
Prior to closing a class I
hazardous waste injection well, the owner or operator shall observe and record
the pressure decay for a time specified by the director. The director shall
determine whether the injection activity has conformed with predicted values by
analysis of the pressure decay and the transient pressure observations
conducted pursuant to rule
3745-34-57 of the Administrative
Code.

(2)
Prior to well closure,
the owner or operator of a class I hazardous waste injection well shall conduct
appropriate mechanical integrity testing to ensure the integrity of that
portion of the long string casing and cement that will be left in the ground
after closure. Testing methods may include:

(iv)
An
alternate method, approved by the director, that will reliably provide a
comparable level of protection.

(6)
Each plug used shall be appropriately
tagged and tested for seal and stability before closure is completed.

(7)
The well to be closed shall be
in a state of static equilibrium with the mud weight equalized top to bottom,
either by circulating the mud in the well at least once or by a comparable
method approved by the director, prior to the placement of the cement plug(s).